Finding the Fourth Proportional to 2,290.50, 3,161.67 and 1,543.98

Step by Step Solution

1. Step 1: Write the proportion equation
   2,290.50 : 3,161.67 = 1,543.98 : x
2. Step 2: Convert to fraction form
   2,290.50/3,161.67 = 1,543.98/x
3. Step 3: Cross multiply
   2,290.50x = 3,161.67 × 1,543.98
4. Step 4: Simplify right side
   2,290.50x = 4,881,555.25
5. Step 5: Solve for x
   x = 4,881,555.25/2,290.50
6. Step 6: Final answer
   x = 2,131.22